print("hello world")
for i in range(5):
    print(i)

world = "bottles"
for beer_num in range(99, 0, -1):
    print(beer_num, "瓶", world, "在啤酒柜上")
    print(beer_num, "瓶", world, ":瓶")
    print("Take one down")
    print("Pass it around")
    # 顾客
    if beer_num == 1:
        print("没有更多啤酒了")
    else:
        new_num = beer_num
        if new_num == 1:
            word = "bottle"
            print(beer_num, "瓶", world, "在啤酒柜上")
